[rollei_list] Re: 3.5 Tessar sharpness
- From: Peter J Nebergall <iusar4s@xxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Fri, 23 Dec 2005 15:18:08 -0600
I remember the old-style lens tests. Years ago Norman Goldberg wrote on
lens testing, and stated ALL lenses are best 2 to 3 stops down from max
-- I tested most all of my stuff, and the improvements can be spectacular
-- espec 35mm zoom lenses. Leitz Elmar improved, Summicron got
incredible....
Of course my Dallmeyer Pentac 110mm F2.9 on my Linhof is "soft" wide
open... but can be hand held indoors...
Sharpness is important, but not all the time.
P.J. Nebergall
On Fri, 23 Dec 2005 12:53:54 -0800 Jerry Lehrer <jerryleh@xxxxxxxxxxx>
writes:
> James,
>
> The usual rule of thumb is two stops down from maximum aperture.
>
> I am sure that Richard will give far more info than that.
>
> Jerry
>
> James Davis wrote:
>
> > What range of apertures produces optimum sharpness on a f/3.5
> Tessar as
> > found on a 'flex T?
> >
> > James
> >
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